You could just be honest with them. If you're over 18 they should be okay with you making adult choices.
Also how the fuck can you confuse the scent of weed with beer?
"kinda miss my kid, sold it for my vibes ticket and some dose last year hahah. but i still shred on the hand drums like it's my job." -DFAC
"Unfortunately Jesus did not snowboard. Jesus was a skiblader - proverbs 7:23" theabortionator