On the outside he's very normal to people and responsive but when he's left alone with my brother he always wipes his hands around and on his mouth and my brother always get sick from It (constant diarrhea and in extreme cases vomiting)
I got a fair amount of video footage of him wiping his hands on his mouth and the next day my brother would be sick but I need more proof like the source of his dirty hands he always goes to the toilet before seeing my brother even if he just went there and i think that's the source, there's also brown spots specifically on his toys and on my brother's stroller where he's mostly likely going to put his mouth on I have had enough of this shit and I don't know where to start if I say anything it will look like I'm the crazy one and it's too much...