I don't think it's so cut and dried. For instance, if you sell a defective gun, and that gun kills the shooter instead of the target, you can certainly be assigned responsibility. Liability doesn't end when something is in someone else's hands. Selling something you know is dangerous, than you know can harm, brings with it is own liability -- contaminated lettuce for instance.

There are a number of implied warranties made when a transaction occurs. [1]

[1] https://www.investopedia.com/terms/i/implied-warranty.asp