Sinus infections caused by viruses are contagious through kissing.
Black mold, whether in the shower or elsewhere in the house, can be toxic but it is unlikely to be lethal.
Influenza (flu) is a contagious respiratory illness caused by influenza viruses. Parainfluenza refers to a group of viruses known as HPIVs, which cause symptoms similar to the common cold.
Adenovirus is usually contagious for at least 2 weeks after symptom onset, or even longer in some cases.
Pseudomonas Aeruginosa is not a sexually transmitted infection. It is primarily spread through contact with contaminated water or surfaces, or through person-to-person contact in healthcare settings.
Dairy products, especially milk and cheese, can increase the amount of mucus produced, increasing the amount of phlegm after eating.
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