ANSWER:

You must have replied to him since it was just a bathroom and not toilet. If you were doubtful, you could have said: wa alaikum! 

Ya sheikh I happened to be in a bathroom washing my hands and a man walked in and said the salam, and I didn’t answer the greeting. Have I done the wrong thing by not answering the Salam in a bathroom?

Etiquette, Morals and Heart-Softeners, Halal/Haram Matters | May 29, 2022 9:15 am
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Is this true? Du’a for protection against harmful insects and creatures اعوذ بكلمات الله التامات من شرما خلق ط I seek protect in the excellent words of Allah from the injuries cause by His creation Allah will grant security to the person who recites the above du’a thrice in the morning and evening. It is very effective for protection against harmful insects and creatures.
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Is it permissible to blow on food or into a vessel cup ect if I am the only one who is going to drink or eat from it I am a little confused from my research brother