I Have Just Developed Alot Of Dry Cough Due To

I have just developed alot of dry cough due to the weather change to winter. I have a 6.5months infant who I still breastfeed. What medications can I use that will not be passed on to him via feeding. Also, my baby has caught fever cough cold nose congestion fur to weather change. Im giving adol for fever but What can I give him for nose congestion. Is apisal good?