Gift Product in one Category?

I have in category the Brand that I want (only in the specific Brand) to give a specific product as a gift to every purchase made by this Brand.

eg Brand with name “TEST” has many kinds of products towels, glasses, candles etc. and I want, the customer who buys from the brand TEST anything to give him as a gift 1 Specific product eg cologne in the basket.

Also, if he buys 2 products from the specific brand, I will automatically give him 2 cologne gifts in the basket.

This can be done;