Hmm well here is a list of things that neem oil smells like:
http://www.discoverneem.com/neem-oil-smell.html
I know Tee tree oil smells sort of like turpentine so the combo would be pretty nasty smelling.
I think it's far fetched that it smells like pot.
Edit: haha! This is the same list the previous poster used! Great minds think alike - and google alike!