Haha. No. Lack of hygiene does not actually result in super resistant viruses. If at all, it results in people who a stronger to existing viruses and bacteria since they are able to live in such conditions. We rather see that tourists going to India tend to fall sick very often because they are not used to the viruses and bacteria there.
And lack of hygiene is not something new. We've had lack of hygiene for like millenia in Human Kind history, yet the human race still thrived. I'm not worried about that.