Capitalism optimizes for the impact it has on the actors involved in the transaction. The party offering the service/product, and the party paying for it. The impact of other parties is not part of that equation.

So if you want create an incentive, have the health impact on society as a whole, impact the profits of the parties involved in creating the pollutants.

So you could for instance bind their taxes to some health measurements. Then you would have a market for capturing pesticides (if that's even possible).

Much simpler and probably more efficient is just to regulate.