So tonight I decided to do some research. I based this research on being told "it smells like swimming baths"
Funnily enough swimming baths contain chlorine, as does our gastric juices (hydrochloric acid)
Looking into this further, hydrochloric acid is quiet an aggressive irritant, burning lungs in high amounts, this could explain the coughs and sneezes.
I believe our stomach is creating way too much acid, moving up our esophagus, and being exhaled with each breath.
Apparently hydrochloric acid has a "pungent tangy" odour, this mixed with half digested food could explain the various smells we seem to emit.
What do you guys think?