Of course that shit is real, I had many anecdotes because I was not living alone in the mountains. One day my meth dealer was in my house as a guest, I asked him for a moment, so I can go to the bathroom and do my needs. I closed the door and started the fan that extracts out all the air from the bathroom to outside, once there I farted a lot and did nasty shit, suddenly I heard someone running to the outside of my house vomiting, it was my friend suffering the consequences of smelling my shit, ha ha I will never forget his face. You usually get a lot of gas with bad quality meth and if you are not healthy of your pancreas. Poor people around me, coughing like wanting to vomit even at long distance, that's why I stopped meth.