I’m getting a cottonswab drug test at work on Monday

My boyfriend smokes weed. Can I kiss him? I feel like I shouldn’t because his saliva has thc and it will get it my mouth

This is my dream job so I’m being very paranoid about this. I don’t even wanna pop kiss just to be super sure there’s no traces on my lips that I can then get into my mouth. He’s fine with this cause this job is important to me..I just wanna know if it’s true that I can fail my test. He’s a big smoker so I’m not taking any chances.