SERENENESS

CONTAGIOUSLike laughter, sometimes SOMEPEOPLE"Unbelievable!" ... or what 17-, 25-, 35- and 46-Across are made from, letter-wise? ISLEOFDOGSReportedly, I adore residents of Battersea, part of London KOOKABURRAThis bird sits in the old gum tree (10) ALASKAROLLSushi bite topped with salmon BROOMSTICKWitch carrier (10) DUSSELDORFEuropean city recovering from disappointment, investing not as much (10) ENANTIOMERAwkwardly mention ear — it's one of a pair, the mirror image of the other SETTOMUSICNoted work? BEAUTYMARKEnhancing "blemish" (3x) EMANCIPATEEuropean chap worried about withdrawn photo's release GARDENHOSEKid’s knocked over shed one rebuilt – a wind-up for the horticulturalist? (6,4) WORDLESSLYRecklessly sells dowry without a sound (10) TWITTERINGSound of birds on social media? (10)