Im going with it because I want a consistent ruling. Lets say the next chest has a poison dart. The fighter says Im wearing plate it cant stick me. Then, the trap after that is a spear from the wall and the halfling says their character is too short for it to hit them. Etc..
You have a chance to spot the trap. You then interact with the triggering event and get a save. I'm even willing to let a player burn inspiration to claim gloves, plate, or height for advantage on the save. Thats what im rolling with and it reflects the gear plenty.
Im double ok with that because I doubt the gloves are really intended to protect against contact poison anyways. Likely, they are for weapon/saddle wear, warmth, or even decorative. If a player buys gloves to specifically protect against contact poison, we will review from there.