How is the air flow of heat in your home?
Two of the most important aspects of your home is the heating and air flow that you have available. Without a good airflow of both heat and cool air your home will not be a very pleasant place to stay. Unfortunately, the lack of both heating and air can cause more problems than just feeling uncomfortable. If your home gets too hot this can allow bacteria to start growing. This plus hot air makes if much easier for viruses and germs to live.
If your HVAC system is working correctly you will be able to control the temp and flow of air into your home. This means you can have somewhat control of bacteria and germs sticking around. If you do not have that control currently I highly recommend contacting a heating and air company to come and check out your HVAC unit.