We are talking about an anecdote here, not giving general advice based on scientific literature.

That said. If I lived in a village that was attacked by tigers regularly for 6 months, and I installed a tiger filter which stopped the attacks, I would gladly pay 30 bucks for that ($30 is what a faucet water filter costs).

Disclaimer: I don't own a water filter or a tiger filter.

To be fair, this is a personal story and not a scientific study.