I got this lack of flavour and smell sore throat crusty nostrils sorry gross i know but true it happened to me when i was off the stinkies about 4 weeks and passed in around two weeks i feel like my sense of smell/taste is getting better all the time - the human body is a miraculous thing even if you kick the living hell out of it for years it'll bounce back like others have said try a nice citrus that'll get your tastebuds jumping again - try some snake oil from Tmax really tangy yet refreshing like a cool wave of lemon and orange hitting you in the face followed by a cool breeze
I've been vaping Menthol or Ice Mint as it's called for a few months lovely flavour but does knock my taste buds out. I'm planning on switching to a different flavour to regain some of my taste buds lol and have the odd menthol vape here and there.