Smelling jet fuel on 9/11

[spooked911]

Lots of people said they smelled jet fuel on 9/11 at the sites of the putative plane crashes. SDuderstadt recently used jet fuel "nosewitnesses" as evidence that planes crashed on 9/11.

I just have two simple questions about this.

I have flown on commercial jets regularly for years, but I don't think I could identify what jet fuel smells like. Particularly, I'm not sure I could distinguish the smell of jet fuel from diesel fuel. That is, there is a fuel smell I have noticed at airports when boarding planes, but it is similar to a fuel smell that I smell in other places besides airports, often around heavy machinery or generators, that I think is diesel fuel.

Thus, on 9/11--
1) how did so many people know exactly what jet fuel smelled like?
2) how did so many people know for sure that they were smelling jet fuel, and not say, diesel fuel?