This is overkill for chernobyl. All you need is to stop dust from entering your body and staying on you for too long, unless your planing to roll around in radioactive dust or waste. If you are really scares, go durring early spring, the snow blocks some radiation from radiation strong spot and the dampness of melting snow stop particles from going airborn. If your gona wear a suit like that, you dont need to repeatedly wash yourself and roll the suit down, just spray it down with water and remove it.
I bought a tyvek coverall so weak and it tears so easily rule 1 buy a heavy duty surgical gown to go onto of tyvek coverall and strengthen seams on tyvek disinfect whole suit and respirator goggles gloves etc with sodium hypochlorite or bleach and use plastic dropcloth on ground then burn suit
Why would ANYONE want to use an N95 filter when N100’s are readily available??? There’s NEVER A REASON to use a product that’s LESS PROTECTIVE than the better product just to save a couple of cents.