If one of your wheels or axles is hit during an accident it can cause a transmission fluid leak. Your transmission has between 1 and 3 outputs shafts that are either driveshafts or CV axles leading differentials or out to your wheels. If any of these shafts are pushed into or jarred hard enough they can damage the seals in your transmission causing leaks after the accident. If you suspect this to be the cause of your leak, it’s often best to replace the seals and check the transmission casing for cracks or damage."
If a hard impact could collapse or crush a humans internal organs, I would think a gasket sandwiched between two metals could suffer the same fate.