Which menthol? My main tape is Halo Menthol Ice. Although Halo Tribeca, which isn't menthol, may bypass it. I actually think I did notice an odd taste on the first few drags, but that usually seems like the norm for a lot of cartos and atomizers so it didn't faze me and I don't notice it now. I am getting the vibe these things need to be kept fairly full to not degrade in taste and vapor but I really try not to judge stuff like that too much until the third refill. Although I'm one of those that thinks steeping juice is a myth for the most part, I do believe a cartomizer or atomizer needs a couple days to break in.