Hey There
Welcome 
The products here mostly come in a neroli scent as jay mentioned. It drys down light and blends with most other scents well.
No mones on there own smell like body oder. Most people perceive them differently depending on which mone it is but you will here descriptions ranging from piss to butt cheese LOL. Don’t panic, oddly people don’t perceive it this way when its on you as long as you use some sort of cover scent or get the products in there original cover scent.
Its a bit of both. Read What pheromones can and can't do: realistic expectations for newcomers to get a better feel for how they work.
Most people will say they enhance reactions by about 10% but I don’t agree with this theory. It can be more sometimes or less sometimes.
This is another question with no set answer. Depends on the environment. If your moving around and leaving good sillage you can effect a person clear across the room. If your sitting in one spot it will reach 5 to 8 feet away. Eventually if the air circulation is good it could travel all over a room and effect people. A lot of variations to consider. Just start with 5 to 8 feet away.
Some people get self effects. Pheromones are signalers. Its not the actual scent that triggers the reaction. It could smell like crap and as long as the molecule is present it will trigger the reaction. They are diffused off the body and inhaled into the nasal passage and then enter the brain where they connect with certain neurotransmitters. These transmitters start to fire sending feelings and emotions to other parts of the brain. These emotions and feelings are what the person is responding to and because the signal is coming from you they associate it to you.
Tisha