Evap line question, please help.

Amanda β€’ I'm married to a wonderful man, David. I have 3 beautiful stepdaughters who I love very much. We're TTC our first child together so lets hope for baby dust! πŸ’•πŸ˜˜πŸ‘ΆπŸ’™πŸ’–

Do evap lines show when you use a negative filter?!

I think I read somewhere that they tipaclly don't?