expression, godan verb (-su)
give someone a cold; pass on a cold
Used when someone transmits their cold to another person. The subject is the person who already has the cold.
子供に風邪をうつされた。
I caught a cold from my child.
人に風邪をうつさないようにマスクをする。
I wear a mask so I don't give my cold to others.
Common kana-mixed spelling; うつす is often written in kana to avoid confusion with other kanji.
Kanji spelling for うつす; less common but still used.
風邪をひく means 'to catch a cold' (the subject becomes sick), while 風邪をうつす means 'to give a cold to someone else' (the subject transmits the illness).
Compound of 風邪 (cold) + を + うつす (to transfer, infect). The verb うつす here means to transmit an illness.