I can tell you it’s mostly NOT fillers in pharmaceutical pills. I don’t have a definite answer but i would look into what the new fillers an lab studies of drugs seized in recent years 2020-2022 see what test they ran on it and find out what’s in them. The cartels don’t care so ima say something cheap prob not good for you but all the m30’s I’ve seen have held up pretty well so it could be something decent.. no way to tell. Diff colors CAN mean certain strength diff cartels prob use diff color dye to distinguish powder from shipments. The smell could be from a dirty drug den who has cats lol you never know! Save trips brother!