
This morning, a visitor to the building where I work managed to burn out his clutch in our underground carpark right next to something to do with the
aircon vents. As a result the entire building stinks of dead clutch and I'm sure it's as bad this aft as when he did it this morning.
Absolutely stinks 
unpleasant
Grounds for decamping to the nearest ale house perhaps 
Nice. Burnt clutch is a lovely smell
Is th ecar still next to the vents?
Many years ago we had a couple of apprentices smoking in the air plenum in one of our RF sealed buildings. It wouldn't have been so bad if they
were 'normal' ciggies.......
ooooh no, not menthol
One of my patients said "I've started smoking menthol cigarettes because they're okay because it's mint not tobacco isn't
it?"
they weren't joking.....
Almost as funny as the diabetic were we couldn't work out why their control was so bad until we asked them what they were having for breakfast
"mostly I have been eating... sugar puffs"
"Do you think they might contain sugar"
Insert loud clunking sound of penny dropping
LOL!
If your building air-con draws it's air from an underground car park there is a serious health and safety issue there, and you are probably smelling the horse poo from the boots of the cowboys who designed the system!