Been smelling something(s) lately, and I'm wondering what it is. I've smelled it in past years I think, but it's particularly bothering me this year. One scent is vaguely like diesel fuel. Not quite, but it's a petrochemical smell. I don't think it's anything farmers are doing, cause I've smelled it far away from from fields. The other is cat piss. Kinda like boxwood, but a little different. I suspect that's tree of heaven. Could that be making the diesel smell also?