I agree with all the above but I have one no one has mentioned..........gasoline.
I'll take it one step further for ya Riverdude - drip ... not sure what the technical term for it is, but the nasty by product that comes off the heater...MMMMM that stuff reeks and I love it all the same
I like JD's answer and not the one posted on here now lmao. :smiley_chinrub:
Thought it might be a little too much... But it is...