MIL wants to give my baby honey

I’m really angry and worried right now because my in-laws keep insisting on giving my 7-month-old baby honey. They believe it’s healthy and beneficial, but I know it can be dangerous for babies under 1 year old. Despite me telling them multiple times about the risks, they don’t seem to take me seriously. I’ve explained that honey can cause infant botulism, which is a serious condition caused by bacteria in honey that a baby’s immature digestive system can’t handle. I’m at my wits’ end because they keep pushing this, and I’m scared for my baby’s safety. It’s causing a lot of tension and stress in the family.