Carcinogenic Ethylene Oxide is used to sterilize the tips that goes deep into your sensitive nasal cavities. PS: Not mentioning how they might be sterilizing those dirty face masks from who knows where; And if Ethylene Oxide is also used to sterilize those dirty masks, you might just be breathing more contaminated carcinogenic substances all day long, along with your own poisoning C02 and dangerous accumulations of bacteria.
Science Fact: Evidence in humans indicates that long-term exposure to Ethylene Oxide increases the risk of cancers of the white blood cells, including non-Hodgkin lymphoma, myeloma, and lymphocytic leukemia. Studies also show that long-term exposure to Ethylene Oxide increases the risk of breast cancer in females. Short-term inhalation exposure to Ethylene Oxide can cause headache, dizziness, nausea, fatigue, respiratory irritation (e.g., coughing, shortness of breath, wheezing) and, in some cases, vomiting and other types of gastrointestinal distress. EPA classified ethylene oxide as a human carcinogen in December 2016.