More Words, Deeper Hole

A contact-contact risk is when your actions function to immediately move something wet (with virus into it) to one of your mucous membranes; for example, if someone across the bus isle sneezes, a droplet lands on your forehead, and you drag some of it into the corner of your eye trying to wipe it off.

Best available -- https://tinyurl.com/FAQ-aerosols -- summarises as "aerosols are much more a risk than any other form of transmission, but the others aren't negligible".

The point of soap isn't that it kills the virus; soap doesn't kill much of anything. The point with soap is that it's a surfactant that gets stuff off your hands, including whatever damp substance had the virus in it.

Alcohol hand sanitiser works pretty well for SARS-CoV-2[1]; the current advice says that if you stick the whole-hand coverage and thirty seconds with 70% alcohol or better that'll kill it. And in the winter especially sanitiser is generally easier on your hands; cracked skin is a major loss of defense against pathogens, so to be avoided.

[1] this is NOT a given with viruses; for example, Norwalk virus, aka Winter Vomiting Disease, sneers at hand sanitizers. (and a whole lot of other things!)