I remember, when I was a kid, watching a movie called, “Boy in a Bubble”. Its main character was born with a very rare condition that required him to live in a completely sterile environment. At the time, I remember thinking that this could never really happen and that it was some made up condition. However, I recently read an article that said that, this was in fact, something that happened to real people. People who are born with his condition face life threatening situations every day. They are required to live in a confined space for the most part and when traveling outside need to wear special equipment that filters out any bacteria they could come in contact with. Specialized HVAC equipment must be used that has the highest level of filtration available on the market. I can’t imagine having to live in the space that is 100% controlled all the time and never be able to experience fresh air. Thankfully there are things like HEPA filters and such on the market that can remove even the smallest particle of bacteria from the air we are breathing. I’m sure that the HVAC systems and filtration in the protective gear they must wear are very expensive I need to be serviced regularly to make sure that they work properly. Without regular filter changes and adjustments to regulate the air temperature around them I am sure that they would end up very ill and possibly even compact a fatal condition. This condition doesn’t happen very often but when it does I’m sure it is devastating to the families.