hi, first time owning ducks, i searched for similar questions but still not sure so i prefer to make a thread
i have 5 ducks, 4 weeks old. they sneeze a little and one of them is wheezing, not all the time but if i'm near them long enough i will hear it, i think only one of them is wheezing because it's been i think 3 days and i didn't hear two doing it at the same time. their waterer isn't deep enough but they have a pool that is 20 cm deep so they can clear their noses, but even after swimming i can hear the duck wheezing. i think it might be because ~5 days ago i let them go outside because i thought it will get warmer but it didn't (16 celsius and windy), next 3 days i kept them inside because it was cold and they have straw bedding that has wood shavings under it and at first i didn't cover it with enough straw and one night they ate some i think because there was some in their waterer. the straw bedding got wet because they had water inside all the time, now when they are outside i open the door so it dries and add straw. except that they seem fine, eating a lot and sprinting when they see the swimming pool
what could be the cause?? and home remedies? i put some garlic in their waterer and i think the wheezing got quieter but it's still there
also less important but:
1. when i try to touch them with my hands they will run away, how to make them like me?
2. can you add chili powder to duck food? i heard it helps chickens
i have 5 ducks, 4 weeks old. they sneeze a little and one of them is wheezing, not all the time but if i'm near them long enough i will hear it, i think only one of them is wheezing because it's been i think 3 days and i didn't hear two doing it at the same time. their waterer isn't deep enough but they have a pool that is 20 cm deep so they can clear their noses, but even after swimming i can hear the duck wheezing. i think it might be because ~5 days ago i let them go outside because i thought it will get warmer but it didn't (16 celsius and windy), next 3 days i kept them inside because it was cold and they have straw bedding that has wood shavings under it and at first i didn't cover it with enough straw and one night they ate some i think because there was some in their waterer. the straw bedding got wet because they had water inside all the time, now when they are outside i open the door so it dries and add straw. except that they seem fine, eating a lot and sprinting when they see the swimming pool

what could be the cause?? and home remedies? i put some garlic in their waterer and i think the wheezing got quieter but it's still there
also less important but:
1. when i try to touch them with my hands they will run away, how to make them like me?
2. can you add chili powder to duck food? i heard it helps chickens