A few notes about that:
" ...
OU student Fazal Cheema told agents that Hinrichs had responded to his Internet advertisement for a roommate, and said the two didn't socialize.
Cheema said Hinrichs was quiet and kept to himself and that he wasn't aware of Hinrichs' interest in bombs.
......
Hinrichs' Pakistani roommate, Fazal M. Cheema, is Muslim, although not particularly religious, according to regulars at the Norman mosque.
Cheema worked at the football stadium, according to the OU student directory, and the men lived at Parkview Apartments, a university-owned property popular with Islamic students because it is adjacent to the local mosque.
.....
Acquaintances of Cheema's say he is not a practicing Muslim and never attends services at the mosque.
..."
Mohammad said it is permissible to lie to an infidel in order to advance the cause of Islam. Its in the Quran.
I guess Cheema had no sense of smell at all. All that stuff, particularly the acetone, stinks.