Abstract: An emission-capturing apparatus includes a tank having an inlet and an outlet. The apparatus further includes a muffler fluidly coupled with the outlet to intercept fluid exiting the outlet, permit passage of gas through the muffler, and inhibit passage of liquid through the muffler. The apparatus further includes a hose having a tank end and a coupler end. The tank end is coupled to the inlet. The apparatus further includes a coupler coupled to the coupler end of the hose. The coupler has a drain hole. The coupler is configured to be coupled to a surface having an ejection port, to completely cover the ejection port when the coupler is coupled to the surface and to support the coupler end of the hose in a position to receive an emission when the drain hole is aligned with the ejection port.