These analogies are wrong. You agree _in your rental contract_ not to dump explosives in the apartment complex trash compactor, and that the apartment complex

These analogies are wrong. You agree _in your rental contract_ not to dump explosives in the apartment complex trash compactor, and that the apartment complex has the right to process your trash. The apartment complex stops looking inside everyone's bags that land in the compactor (a bit late to prevent it from getting into the trash), instead sniffing bags as you put them into the trash chute on your floor, and tagging the bag with a red sticker if it the chemical composition matches a particular pre-registered explosive from a list. At the other end of the chute, a counter checks if you've dumped a dozen bags with red stickers, and if so, a human may open one to see WTF you're up to. If you're indeed dumping explosives in bulk, they let the bomb squad know. EITHER WAY, that bag would be headed to the compactor, you are affirmatively putting it there, and any explosives are a breach of agreement. In no other case besides you opening the chute to dump a bag is it sniffing anything else anywhere, except when you open the chute to send these bags to the compactor, bags you decide the contents of.