How do I keep my 6 week old and myself from getting sick?

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My SO has come down with a nasty cold. Hes barely holding the baby unless I need him to while I eat and go to the bathroom. When he does he uses hand sanitizer and keeps the baby away from his face. He's not kissing the baby or me and sleeping on the couch so I don't get sick either. Anything else we can do? I feel like I have a sinus headache and I EBF and co sleep so I cant get this.