dubdobdee

q17:
~~i: How is life if you just smile~~?
~~ii: What was charmed with smiles and soap~~?
~~iii: What subterranean objects displayed a lipless grin~~?
iv: If every fascist has a communist smile, what does every communist have?
~~v: Who faced the firing squad with that faint fleeting smile playing about his lips~~?
vi: Who compared the spontaneity of Molotov’s smile to that of a mechanical feline?
vii: Who received a smile from the blonde which he could feel in his hip pocket?
viii: What two adjectives have been applied to the grin of Esox Lucius?
ix: Who, in futile pursuit, grinned like a rodent trap?
~~x: How often do squat citizens smile~~?

COMPLETED:
i: Chaplin's song "SMILE" (also sung by NAT KING COLE) (googled by

dubdobdee)
ii: The SNARK in Lewis Carroll's The Hunting of the Snark (known by

dubdobdee
iii: "BREASTLESS CREATURES under ground/Leaned backward with a lipless grin", from Eliot's 'The Wasteland' (recognised by

dubdobdee, google-confirmed

marnameow)
iv:
v: This is from the last paragraph of Thurber's "The Secret Life of WALTER MITTY" (known by

dubdobdee)
vi:
vii:
viii:
ix:
x: "For Cambridge people RARELY smile/Being urban, squat, and packed with guile", from Rupert Brooke's The Old Vicarage, Grantchester (known by

dubdobdee)