So can I sell a camera with the following description? SpyCam Disclaimer: should not be used for spying
Not sure to what extent this is still the case, but when I was messing around with greyzone drugs about a decade ago, they tended to be sold on technically legal, UK, Swedish, Polish etc web stores. They'd have names similar to illegal drugs they were analogues of and like descriptions of the effects. But have the disclaimer "not for human consumption. Research purposes only".
Of course even the purportedly pure chemical products were unsuitable for actual research or standards use due to lack of attestation to purity(at least with most vendors) and so on.
It didn't affect the legality, probably just a weak attempt to avoid potential liability.