Will my baby get a cold if my other children have it? 😰😰

So it started with my 8 year old she started to have a little bit of a sore throat, then a small cough, with runny nose. I thought it was allergies but I think it might very well be a cold. Now my 2 year old has it which is harder for him to blow his nose so hes a little congested. But I'm worried for my 2 month old. It's very hard to keep my kids away when they also like to cuddle on me and my 2 year old just LOVES to give his brother kisses so it's been really hard to keep him away the most. My baby is breastfed so I'm hoping the antibodies could help him fight this? Can anyone give me a peace of mind about this? What should I do?