I love Hashhog's list! As for myself: very old and very new books. Also, this probably seems very weird, but as an experiment, I learnt to like the smell of my poop (is that the English word?) Play-Doh is also very good indeed. And SoulPunisher, what's wrong with sniffing glue?
I think these are smells geeky people like (don't judge me) New book smell Smell of a library Freshly cut grass Burning metal (My dad works on computers so he melts metal for the stuff...) My dog Yes, These are the smells i like...
I looked up if the smell is added on google, and it says it isn't. This sorta explains why different gasoline types have different smells, not all 1 smell.
I think the odorizer is added in case of a leak. That way, it would be easier to identify in the case of propane, or other gas, leaks. I am also fond of the smell when you step out of the car in front of the airport. Also, as a camper, I like the smell of fire.
I love the smell of: - Petrol- The smell of an unopened book- The smell of rain - A freshly lit match