Baking soda actually ISNT a bad cut. BUT, you do want to remove the cuts from your coke - towards the bottom I explain what you have to do to remove all the garbage and active cuts in coke...
What you want to worry about is psychologically ACTIVE cuts. if you get a batch of coke thats like 30% actual coke but the other 70% is inactive cuts... all you have to is just do more/larger lines.
However, if you get coke with active cuts, meaning cuts that actually have an affect on your psychological state, you are screwed and want to get a new dealer or find better coke.... SADLY, most of the coke in the US today is atrocious... cut up with tons of active cuts, ones that make you feel speedy/gittey/paranoid and all hyped up - WHICH, in effect ruins the desired effect of the cocaine - a calming, chilled out stimulant that blasts your dopamine til you feel like a king, confident, ego boost, etc... you know, how its supposed to feel like. BUT all those active cuts make you jittery and anxious and wanting more lines which ironically make you even worse off - these jittery anxious feelings kinda cancel out the desired ego boost that coke is meant to give... its stupid, and sucks, why dont dealers just cut with INACTIVE CUTS??! nobody would care to just take more lines to get the desired amount of coke, but unaffected by any shitty cuts.
The most common of these active cuts is "Levamisole"... pesky little levamisole, if you ever do coke and feel angst and stress and and jittery and uncomfortable - that is NOT what coke should feel like. If this is always how coke has made you feel like, then you've never truly felt cocaine. its all bullshit, but its the truth.
Only way to avoid this is 2 options
1. Be lucky enough to find a dealer who has coke without active cuts...
2. Do an acetone wash... it will completely clean your coke out, leaving you with pretty much pure cocaine. if you want to know how to do an acetone wash, you can search the forums, there are plenty of threads about it... its really simple, takes about a day - if you need explanation I can explain it the best I can, or just link you to the right channels.