Hi SPJ,
How old is DS? I only ask as babies & toddlers can wheeze for many reasons. It sounds to me like your little tike probably had a virus (cold or flu bug, or similar) and it has gone to his ears & possibly his throat.

With Asthma there is a particular wheeze which is not only heard in the throat (by our ears) it is heard clearly in bronchioles (upper branches) of the lungs with a stethoscope. 2 of mine have mild Asthma & I also have a brother with sever Asthma.

Unless your DS is having trouble taking breaths I wouldn't worry about it too much, as it will probably disappear when he is treated for the ear infection (which is common in children & babies)

Hope DS is better soon.

Ps I know Asthma sounds scary, but when controlled properly it's not that bad.