I wear several EDTs, primarily Guerlain's Aqua Allegoria Mandarine-Basilic, but also Issey Miyake's l'eau d'Issey and Christian Dior's Eau Sauvage. All very citrusy.
I always assumed the smell was from the lube.
I lubricate with recycled engine oil.
Funnily enough, the one I liked most was Balenciaga Cristobal Pour Homme (or Cristobal Pour Homme by Balenciaga) which seems to be discontinued, the mini bottle I had is selling for about 17 quid on ebay. I wish I'd known that before :)
Because you're unflappable.
Wearing aftershave is not something that ever really occurs to me. Possibly because my sense of smell has never been that great, possibly because the only times I've really noticed men wearing aftershave, it's because they've smelled awful.
A good few years ago, my girlfriend-at-the-time bought me a bottle of the Jean-Paul Gaultier one with the bottle that's shaped like a torso. I used it a couple of times and quite liked the smell of it (the ex particularly liked the smell of it), but I've noticed how ubiquitous it is, and Gaynor says the smell reminds her of all her gays, so I've given up on it.
More recently, my sister gave me a bottle of Boss "Night" for Christmas, which wasn't much use to me at the time because I was sporting the full winter beard. I've tried it a couple of times, but I'm not massively keen on the scent. Maybe if she'd bought me Boss "Wet" instead...
I used to put some on when going out and sometimes I'd have little phases of also wearing it at work. Never really put much thought into what though, I'd just end up with some at xmas. I seem to have stopped entirely of late though. There is some in the bathroom and it says Police on it. INSERT FUCK THE POLICE JOKE ABOUT IT GETTING ALL THE LAYDEEZ & GENTS
On other people? I generally only notice if I'm smooching someone or if it's someone who's put on an overpowerfully large amount. Obviously the latter is terrible, and the former is great because it's smooching.
As an actual homofag, my greetings tend to involve kisses and hugs, so you get a whiff of whatever someone is wearing.