It's a water-based product called Bona Traffic HD and it looks like there is a UV additive. The scent wasn't nearly as bad as an oil based product would have been. You can walk on it after about three hours too.

Leveraged trading is basically just borrowing capital from an exchange to invest with. You then "bet" on a long or short position. You can either make or lose a lot more than you would have with just your own money in direct relation to the amount of money you borrow. It's very dangerous.