Specifically, this page addresses non-food products clearly used in households across the United States and Canada. These products were also used, of course, by businesses, schools, government offices, and other non-household entities. The "household" aka "personal" bottles category has been used by archaeologists - and collectors to some degree - for many years although the actual bottle types contained within the category varies significantly Herskovitz ; Berge ; Univ. In the end, there has never been total agreement on the categorization hierarchy of bottle types and probably never will be. The other typology pages e. This is because the "household" and "miscellaneous" categories are much wider ranging in diversity and lacking the tighter or narrower "theme" of the other major categories.
Mold can cause many health effects. For some people, mold can cause a stuffy nose, sore throat, coughing or wheezing, burning eyes, or skin rash. People with asthma or who are allergic to mold may have severe reactions. Immune-compromised people and people with chronic lung disease may get infections in their lungs from mold. There is always some mold around. Molds have been on the Earth for millions of years.