They also work great for getting PETG prints to release from PEI build plates. Flip the can upside down, spray at the back of the sheet where the print is until it forms a thin layer of frost. Wait until the frost disappears (really you’re waiting for the metal to contract, but you won’t see that), bend the plate, and the part should pop right off.

…then flee to somewhere better ventilated to escape the cloud of bitterant before you vomit.