It was a dirty place, but not the litter and fly-tipping midden so popular with today's filthier citizens.
No, this smog consisted of soot and industrial grime belched from thousands of chimneys, blackening lungs and still staining magnificent sandstone buildings today.
Glaswegians only started to realise they lived in a Dear Green Place when the city became a smokeless zone in the 1960s.
Thank the UK government for helping Scots breathe more easily.
They toppled those horrid chimneys, and the steelworks that fed them, and their neglect of heavy industry saw the end of those dirty shipyards, mines and loco works.
But such brave Westminster efforts were but a sticking plaster for our polluted planet.
UN scientists now claim "with 95% certainty" that most of the global warming since the 1950s can be blamed on humans burning fossil fuels.
The Intergovernmental Panel on Climate Change predicts more heatwaves, floods, droughts and rising sea levels from melting ice caps.
Coastal towns and low-lying islands will be swamped as greenhouse gases build up in the atmosphere, so you youngsters might want to rethink retirement plans for the Firth of Clyde.
Those 840 scientists from the IPCC's 195 member countries produced a 3000-page report, so big it will be released in three parts over 14 months.
They should have a chapter on the futility of chopping down rain forests to print reports governments ignore.
The much-vaunted Kyoto Protocol is another UN-inspired flop first negotiated in 1997 to reduce greenhouse gases.
The United States has never signed up and China was exempted along with India on the grounds of being developing countries.
So, the US and China, the world's top two polluters, have never boarded Kyoto's hybrid bus.
Last year, only 35 countries signed the new treaty, while Japan, New Zealand, Canada and Russia withdrew, leaving only about 15% of the world's greenhouse gas emissions covered by Kyoto.
So what's the point in Britain enduring economic pain to save the planet when our efforts are a drop in a toxic ocean?
You have to hand it to US Secretary of State John Kerry. You couldn't give the man a red face.
Despite his country's abysmal record, he has the cheek to preach: "Only action by humans can save the world. This isn't a run of the mill report to be dumped in a filing cabinet, a political document produced by politicians. It's science."
It sure is, y'all, and science says Yanks represent 5% of the world's population yet consume 25% of its energy.
And don't blame the Chinese. We've had our industrial revolution, we've already polluted the earth, so who's to tell them they don't have the right to progress?
It's the same hypocrisy that would deny such as Iran a nuclear future while ignoring Israel's nuclear arsenal.
On average, the energy consumption of China's 1.36 billion people — much of it used to make stuff for the rest of us, it has to be said — is still one quarter of your average American's.
Politics and vested interests have so clouded the global warming argument that you don't know which scientists to believe. It's a bit like listening to our independence debate, with both sides telling porkies for their own ends.
What if the sceptics are right and this latest report does exaggerate the danger? What if there's only a 50% certainty? Does that mean we need do nothing?
Fact is, the world's mindless energy consumption is fuelled by short-term greed and the ignorance and apathy of global consumers. Sod the future.
MULTI-nationals and governments are concerned only with the next election, the next annual shareholders' meeting.
But if you believe climate change is the worst catastrophe that could befall future generations, you're kidding yourself. Water shortage and over-population will prove even more immediate threats.
And on those two at least, the solution is entirely in Scotland's own hands.
I fear, though, that the public will take climate change seriously only when it starts to interfere with their telly reception.
ALL year parents warn their kids not to take sweets from strangers. Then every Hallowe'en they help them dress up and send them out to do exactly that.
A severe dressing down was the least Amazon, Tesco and Asda could expect for selling "mental patient" and "psycho ward" costumes.
They took justified stick for tacky products, but it's a stretch to argue they reinforce outdated mental health stigma.
If anything, they have got people talking about what has been treated as a no-go issue.
It's surely a sign of the times that while "mental patient" fancy dress has roused public opinion, there's never been a murmur about the ever-popular "sexy schoolgirl" outfits.
Anyway, as usual you can expect to see plenty of Weegie zombies on our streets.
Some of them may even be wearing costumes.