Former recycling center employee here. Don’t throw your trash in the recycling! By the time it gets to us it’s really vile and we have to dig through it and dispose of it. The worst smell I’ve ever experienced was a bunch of oysters that someone threw into the recycling that sat in the summer heat for a few days before sitting in our warehouse over the long weekend.
Also, don’t put cigarette butts in bottles/spit in bottles.