Strange exhaust smell --1990 7MGTE smoking the greens?!?!?!

[916MKIIIx2]

Alright, so this may seem somewhat wierd but im perplexed by this, when I looked it up I got a bunch of whack answers...

My friends 7MGTE just one day started smelling like there was a lb of marijuana burning in his exhaust, he has no smoke or anything coming from his car, just this odd marijuana like smell... any clues? And no its not actually marijuana...

[cre]

WTF? Never heard that one before. The only two odd smells (other than fuel and oil) that come to mind are burning coolant or a bad catalytic converter. Burning coolant will smell kind of sickly, sweet... like not quite right maple syrup. A bad cat will smell of rotten eggs (sulphur dioxide).


EDIT:

To all users: Please use more descript titles when creating new threads. Fill in your profile to include the details of your vehicle (model, engine, year, swap or not and any aftermarket modifications), city AND state (there are more than one Denver in the US for example)... Even better would be to also include these in your signature. This will make it a lot easier for those who are trying to help you.