I made it up. But let's see…
For me to contract COVID-19 by touching the handle of a gas pump twice:
The handle would have had to have been touched by an infected person within the past few hours. There were 32 gas pumps and I was the only car at the station, at about 8:45am.
That person would have basically had to slobber on the handle to get anywhere near enough viral load onto the handle. I'm unaware of a handle-of-gas-pump-licking fetish, but maybe it exists.
I would have had to get virtually all of that viral load on my hand in a few seconds.
I would have then had a HUGE failure of my sanitizer to do ANYTHING to remove the virus from my hands.
I would have then had to lick my hand or something to get all of the virus that remained.
0.0001% was probably high.
If you wanted to try to figure out the actual number, you'd have to start here: what % of the population currently has COVID-19 and is unaware and out and about? It's not like that number is even 5%.
I don't buy that there's only a 0.0001% risk. Where did that number come from? I leave my home a lot... groceries, outdoor cocktails (downwind and 10 feet from friends), golf course every day, walks, bicycle rides, a take out burrito today from Casa que Pasa and for gas. All calculated risks. It's sort of fun to know... that the next time you reach for the gas pump handle you'll think of good ol' DMM.
Viral load matters quite a bit, the pumps are outside, and a bunch of other factors, including that I have a bottle of hand sanitizer in my car.
Because, again, 0.000001% may as well be 1%.
Why do you ever leave your house if you're not willing to risk 0.0001% chance of anything happening?