"It does appear to be just a tragic accident," said village police Sgt. Austin Ryan, adding that the glass bottle containing the liquid nicotine did not have a childproof cap.
This really means nothing. It's a bit of a stretch to say a 1 yr old has the fine motor skills to open a bottle with any cap. From the sites I found, at that age, they have just figured out that they can use the thumb and index finger opposed, and can squeeze well, but adding the middle finger is a bit older for a squeeze and turning. I'm sure that there are children that are above and below that curve but whether this is the case is not easily known because of the following..... And since the child presumably drank the eliquid, it is unlikely IF he was able to open the bottle, and then he then put the cap back on. So, it is very likely that the bottle was found open, with the 'non-childproof cap' nearby - which means that either the child opened the bottle - again, highly unlikely given the motor skills for that age, or the bottle was left open by the babysitter (if, as some have reported, it was, rather than the parents or grandparents).
It is unlikely that will ever be known (confessed) or reported, but the latter is, imo, the most likely scenario. IF that was known, then the spin on the story automatically goes to the babysitter, not the substance in the bottle, which in such a situation could be any harmful substance - drugs, drano, bleach, alcohol, etc. etc.