good for short time.
No it's not harmful in healthy males.
we can prevent harmful microbes in lots of different ways: by cleaning hands daily by staying fit and healthy by getting daily vaccinations
In reasonable doses - a daily amount of max. 5 g - NaCl is not harmful.
Salt can be harmful for the heart if the daily intake is greater than 2,5-5 g.
it releases harmful radio active waves which s harmful to all living organism
yes
ozone affects our daily life by letting the harmful rays of the sun pass through it.
Recommended Daily Amount
No, smegma is not harmful. Some claim that it has natural antibacterial enzymes, and others say it doesn't. It is natural and should be cleaned as part of daily hygiene.
Sulfur is actually good for you. You should have at least 200g of sulfur in your daily diet.
Not if it is cleaned regularly.