Antibacterial soap has a similar formula, but with the addition of one or more of three biocide chemicals: benzalkonium chloride, benzethonium chloride, and chloroxylenol. Antibacterial soap can also disrupt helpful bacteria on your skin that support healthy pH, barrier function, and pathogen defense, she explains. When overuse of antibacterial soap runs down drains in large quantities, it has the potential to shut down entire plants. Studies show correlations between antibacterial products and asthma and COPD in healthcare workers who are frequently exposed to these products in their workplace. So, ditch the antibacterial products altogether and fight cold and flu season the old-fashioned way: with plain soap and water.