Jogging through the hills of Stanford and Palo Alto in the 90s, you would occasionally smell something sweet, reminiscent of baking bread, even though there wer

Jogging through the hills of Stanford and Palo Alto in the 90s, you would occasionally smell something sweet, reminiscent of baking bread, even though there were no bakeries or homes nearby. I was told by an old-timer (worked in SV in the 60s and 70s) that's the smell of the outgassing TCE. Not sure if it's true, but it definitely made the smell less appealing.