Shannow, resistance is a huge probem. If you kill bacteria and viruses, you better make sure to kill 100% and not just 99.9%. Some of the survivors will be resistant. Just look at the issues with antibiotics, which have over the decades become less effective or even ineffective in some people.
One product I find outright gross are those sanitzing hand lotions. In California, foodhandlers, who also touch money, do not have to wash their hands or wear gloves after handling money and before handling or preparing food. They may use a hand sanitizing lotion. I find this absolutely disgusting.
The place where you are most likely to get an infection is a hospital. One of the reasons I stay away from them!