I am a doc and my partner is a medical microbiologist. Its just about simple bacteria spread - would you want your immunocompromised relative in contact with a

I am a doc and my partner is a medical microbiologist. Its just about simple bacteria spread - would you want your immunocompromised relative in contact with a doctor that has just been in contact with a contagious infection source without at least trying to minimise the chance of cross infection? The stethoscope is a similar concern - rarely cleaned properly, often present.