Smoking weed has been LEGALISED TODAY in California. Can suppliers be sued for mental problems, etc?

Update 2: If a parent gets delusional and cooks their baby in a microwave (YES, this has happened), while high on cannabis, surely the LEGAL suppliers can be sued.
Update 3: Some good points made, especially about alcohol harm and how suppliers are rarely, if ever, sued for the harm that the toxic elements of their product cause both mentally and physically.
It makes no sense that tobacco suppliers can be sued but not alcohol and now marijuana suppliers. Does anyone know why?
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