题目内容：
根据下列材料，请回答题：Oursenseofsmell,whichwenormallytakeforgranted,isnowadaysbeingincreasinglyusedforpurposeswhichmightsurpriseusifwewereawareofthem.Oneareainwhichsmellsarecreatedtoachieveparticularresultsismarketing.Forsometimemanufacturershavetakenadvantageofoursenseofsmellwithregardtohouseholdgoods.Millionsofdollarsarespentonproductresearchinthehuntfortherightsmellasitisbelievedperfumeinfluencesthewayconsumersperceiveabrand.InasurveyintheUnitedStates,whenpeoplewereaskedwhatwasthemostimportantfactorintheirchoiceofdetergent(洗衣粉),smellwasratedhighly,aboveingredientsandprice.Nowstoresarebecomingevenmoredirectintheiruseofsmell.Thesmelloffreshbreadinasupermarkettendstoencouragepeopletobuy,andpeoplesellingtheirhousesarerecommendedtohavecoffeebeingheatedwhenpotentialbuyersarrive.Suddenlysmellisbecomingbigbusiness.Onecompanyspecializingintheuseofsmellstoattractcustomersnowhasmanylargestoresonitsownlistofcustomers.Theyfindthatwhenpleasantsmellsarefilteredthroughastore’sairconditioningsystem,peopletendtospendlongerinthestoreandbuymore.
Researchshowsthatsmellscanincreasepeople’sviewofthevalueofaproduct.Inatest,peoplelookedatthesametypesofshoesintworooms—onefilledwithpurifiedair,theotherwithasmellofmixedflowers.84%ofthepeoplepreferredtheshoesintheroomwiththesmellofflowers.Infact,manysaidtheywouldbepreparedtopayuptoUS$10moreforapair.
Smellsalsohaveotherpotentialuses.Somecompaniesareexperimentingwithdifferentsmellstoproducedifferenteffectsintheirworkersaccordingtothetimeofday.Forexample,earlyinthemorningtheymightputthesmelloflemonintheairconditioningsystemtowakepeopleup.Inthemiddleofthemorning,whentheatmospheretendstobecomemoretense,thesmellofwoodcouldbeusedtocalmpeopledown.Beforelunchtimethesmellofmeltingbutterwouldencouragepeopletogotolunchontime.Afterlunch,whenpeopleoftenbegintoloseconcentration,thesmellofmint(薄荷)wouldincreasetheiralertness.Whichisthemostappropriatetitleforthepassage? A．Howtoavoidbeingaffectedbysmells
B．Usingsmellstoinfluencepeople
C．Thepowerofoursenseofsmell
D．Newsmellsinsupermarkets
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