system
Given the following post, respond as if you're commenting on Reddit:
human
Is salt water a good antisceptic?  If so , how good?

Do different concentrations have different effectiveness?  Is there a certain concentration that is hostile to most life.

wikipedia says this.

>  Many micro organisms cannot live in an overly salty environment: water is drawn out of their cells by osmosis.

I was wondering does it kill a lot of virus and bacteria?
gpt
When Wikipedia says they can't "live" in an overly salty environment, what they really mean is they can't grow and multiply in such environments. But bacteria don't have to "live", they can go dormant and stay that way for years, only coming back to "life" when conditions are suitable. And viruses even more so.

This  is why salt is a preservative, not an antiseptic. While in the presence of high salt concentrations, many bacteria will go dormant, they may form spores and stay in their spore state for tens or hundreds of years. But they're not dead, and when you take the material out of its salty environment, those same bacteria will start growing again.