In a picture on this article, we see a kohen who has enclosed himself in a plastic bag so as to avoid becoming impure as a result of flying over a cemetery. Why is it that a pressurized fuselage does ...
I carry a mincha/maariv bentcher in my pocket, and I keep it wrapped in a paper covering in case I walk into the bathroom. (I know that some hold that bathrooms today don't need a double covering, but ...
There are occasions, e.g. a mezuza in a sometimes-unbecoming environment, in which we're required to cover a holy object with one or two wrappings to separate it from various environmental elements. ...
When you purchase Tefilin, the Tefilin Shel Yad has a protective cover. Why? Is it Halachically necessary?