Ehh, someone has already done the calculation: https://everydayastronaut.com/rocket-pollution/ https://everydayastronaut.com/rocket-pollution/ It may be order-

Ehh, someone has already done the calculation: https://everydayastronaut.com/rocket-pollution/ https://everydayastronaut.com/rocket-pollution/ It may be order-of-magnitude worse, but not 3 orders of magnitude (If you look forward to using starship for human transportation)