Fainting is a brief loss of consciousness due to a drop in blood flow to the brain. The episode lasts less than a couple of minutes and you recover from it quickly and completely.
It doesn't mean that you are dead to the world and won't know what is happening around you.
So people blaming Gauhar and calling it fake should understand that it only happens for a very brief period of time ..you just get a sinking feeling and you lose consciousness and then you recover pretty fast.
Tanisha making fun of it I can understand as she doesn't like Gauhar but Andy's act was very shameful..especially since in the entire bigg boss stay Gauhar had always supported him and had never said anything bad about him..