An "AERATOR" is the part on the end of your faucet that the water comes out from. It usually holds a screen and water saver in place.
A fish AERATOR is a device used to add oxygen into a fish tank so that the fish do not suffocate as they consume the increasingly depleted oxygen supply
The break and repair events probably released debris into the pipe. These eventually get caught in the faucet valve and it may have to be disassembled to remove them. check the areator
To order parts for an Olathe Model 83 aerator, you can start by visiting the official Olathe Products website, where you might find a parts catalog or contact information for customer support. Additionally, consider reaching out to local dealers or distributors that specialize in lawn and garden equipment. If you have specific part numbers, it will make the ordering process smoother. Lastly, online marketplaces may also offer parts for this model.