To remove the smell of exhaust air in a vacuum vehicle safely, reliably, and easily.SOLUTION: The vacuum vehicle includes: a recovery tank 4 in which sucked substances are stored； a vacuum pump 10 that sucks air in the recovery tank 4 via an inlet passage 11 that is connected to the recovery tank 4； a lubricant channel 20 that is connected to the vacuum pump 10 and sends a lubricant； an exhaust air passage 15 that is connected to the vacuum pump 10 and through which air and lubricant are discharged by using the vacuum pump 10； and a suction and discharge switching cock 12 that is provided in the exhaust air passage 15 and can be connected to the inlet passage 11. The vacuum pump 10 can receive a smell modification component for modifying the smell of the air.SELECTED DRAWING: Figure 3【課題】吸引車における排気の臭いを安全、確実かつ簡易に取り除く。【解決手段】吸引物が収容される回収タンク４と、回収タンク４に接続された吸入通路１１を介して回収タンク４内のエアを吸引する真空ポンプ１０と、真空ポンプ１０に接続されて潤滑油を送り込む潤滑油流通路２０と、真空ポンプ１０に接続されるとともに、この真空ポンプ１０を利用してエア及び潤滑油が排出される排気通路１５と、排気通路１５に設けられて吸入通路１１に接続可能とする吸排切換コック１２とを設け、真空ポンプ１０は、上記エアの臭気を変調する臭気変調成分を受け入れ可能とする。【選択図】図３
