I’m interested, but for gas tank vent. Pretty set on the Sniper. Thinking about the old hard line vent out of the filler neck into a canister. No comment on the paint sniffing girlfriend, still processing that one....Most of the 70's-'80's carbureted vehicles had charcoal canisters to absorb fuel fumes and they worked quite well. For some reason no one is ever interested in retrofitting any such equipment, they just want to throw the baby out with the bathwater. So to speak.