There'sacommonbeliefthatsmokingfromahookahislessharmfulthansmokingtobaccoinotherwaysbecausethehookah'swaterfilledpipefiltersouttoxicchemicals.Butanewstudyofficiallydebunksthismyth,showingthatalargefractionofheavymetalsintobaccoarestillpresentinhookahsmoke
.。不错。