hey, can u guys tell me what this line is
 

hey guys, can someone tell me wat this line is? its from a 94 FD and is right underneath the throttle body and it is leaking something, not quite sure, and some help will be appreciated, thanks

http://www.sacboybirdy.com/RX7/prob.jpg

does it smell like gas

yea smelled gas a little but looks kinda like oil as well. it connects from a tube to a black plastic underneath the pipe from the intercooler and connects to the engine using the pipe as well i think, let me know if u guys can tell me wat it is and how i can fasten that up or wat i should do so it will stop leaking, oh and i also wanna take it off but i dunno if it will squirt or drip out but jus thought I'd ask u guys before i do, thanks:D

it is a catch can it goes to the purge controll seloniod and the charcol canister