Pulmonary vasculature removes emboli before they reach into systemic circulation.
I can speculate that if the emboli are made of fat or clot then our body could degrade it but how does it removes air emboli?
Wikipedia without any citations just states:
Gas bubbles arising from decompression sickness are generally formed in the venous side of the systemic circulation, where inert gas concentrations are highest, the bubbles are smaller at first and they are generally trapped in the capillaries of the lungs where they will usually be eliminated without causing symptoms.
Could anyone provide a reliable source for it or a satisfying explanation?