plug adapter

Hi I was wondering if there's a reason as to why a specific adaptor plug does not work in any socket in my house. For some reason Calpol Vapour Plug In (basically an adaptor plug with a little heat plate for moist tablets - like the mosquito ones) does not work in any socket. First I thought it...

I know the plug conversion adapters your get with cheap Chinese products are often dangerous, but this one takes it to the whole next level. :eek::mad: See: