that’s odd. the oil i buy is almost tasteless and when i do infusions, even with thc flower, there’s almost no weed taste.
it really depends, everyone is different and cbd is really transparent. i find that for myself, i need 10mg/day for my knees, i take extra if i’m sore or working harder. sometimes there’s a tolerance build too, where you have to up your dose a little after a couple of weeks. the best thing i would recommend is to try it for a month, up the dose after a couple of weeks if you don’t see a difference, then take 2 weeks off after that month to see if you notice a difference that way.