Teleports aka coinswaps do help and I have my own implementation of them here: https://github.com/supertestnet/utxo-dealership/

They let you "sell" your taint tree to someone else (and buy theirs) in a way that can't be easily identified on the blockchain. If you do coinswaps frequently, you make the overseer attack, in particular, much harder to do, because the taint tree they are analyzing is the wrong taint tree. Taint tree analysis relies on users engaging in repetitive behavior, but with coin swaps you "purchase" someone else's repetitive behavior, disrupting the analysis.