Fixing Micra K11 part 3 - Rustproofing rear underbody

After some washing, welding and CRC Rust Remover treatment I coated the rear underbody with this naphtha-based rustproofing agent (AT Carat Inner Cavity Wax). Smells really bad... So far I have used for this car: ~ 3 cans of CRC Galvacolor RAL9006 silver ~ 2 cans of Biltema solvent free cavity wax 36-2429 ~ 1 bottle of CRC Rust Remover ~ 2 bottles of AT Carat Inner Cavity Wax