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新冠肺炎疫情肆虐，香港有一家19口早前于观塘工厦一个派对场地吃火锅及烧烤后，至少10人染疫。感染及传染病专科医生曾祈殷周一(10日)早上在电台节目表示，吃火锅不停煲着滚水，会令气流在室内空间滚动得较快，因热力缘故，“导致那些(飞沫)微粒细同轻，变成可能有机会飘得更加远”，吃火锅的环境通常有冷气或风扇，此等环境因素都有助飞沫传播。

曾祈殷又指，吃火锅本身是高危活动，人与人之间会有近距离接触，有机会透过飞沫或接触传播，聚集人群亦易造成交叉感染。他认为有关此间家庭群组个案有标志性，提醒大家不要聚集。他又提醒，冲厕亦会产生气雾，故冲厕时要盖上厕板。

中大医学院呼吸系统科讲座教授许树昌认为，吃火锅所产生蒸气的热力可达摄氏60度，应可杀死病毒，然而参与者染上病毒，主要是大家坐得很近，导致病毒容易传染人。许表示，当有人咳嗽时，所产生的飞沫范围可达1米至1.8米，坐在对面或附近的人可能因有捽眼摸鼻动作，令病毒进入人体黏膜而受到感染。

中大公共卫生及基层医疗学院客座教授黄子惠则在电台节目表示，未有确实证据确认火锅雾气会否加强病毒传播能力，不过理论上带病飞沫不会因为雾气增加，反而多人近距离聚餐更有机会令患者感染其他人。他又指新型冠状病毒在潜伏期及发病初期，已经有感染能力，令隔离检疫的成效大打折扣，由于病毒或可逗留在空气中一段时间，透过空气传播，令他担心用酒店隔离可能引致传播风险。