I can't see anything or anybody swallowing this stuff. I have gotten it on my hands before and it taste so bad anybody putting this in their mouth would spit it out immediately. I feel FDA and other regulatory agencies will eventually require them to have childproof caps and other safety precautions. I think we should go ahead and beat them to it. I would say a majority of 3 year olds cannot open a child proof cap. I mean I have enough trouble opening these. My oldest grandson who is 9 can open them but the younger ones cannot.
It's entirely possible that most 3 yr olds can't. And it would slow them down all I know is mine were 2 for 2 with the styles I had in the house. I gave them time to try cuz I drip and thought maybe I could put my little bottle with the eyedropper lid in a med bottle with childproof lid, no such luck. So it has to stay in my pocket better to risk leaking on me than them thinking it smells good and taking a swig.