4: Pronounced ability to smell negative votes (3)
6: Initially, celebrated Rough Rider's pick is to fish (5)
9: What this puzzle is (3)
10: Hostile warning: one man has captured the queen (11)
11: Little singer returned, following band to total a hairy little mother with seating for one. (7)
12: Exclusive place is developed (7)
13: Sailor offers thanks to the British resistance (3)
15: Ace practised a lot by female golfer in a state of decline (2,1,3,3)
16: Timely introduction of purifier into terribly poor air (9)
18: Crew had dinner, we hear (5)
20: Hikers' path around Virginia is hard work (7)
21: Loud lot ran out at the head (7)
23: Missed hoax set up to trap Sunday drunk outside saloon entrance (4,5,2)
25: Right, turn right to play with robot (3)
26: Artist back on the issue of causing inflamation. (5)
27: Toothpaste brand at Target? (3)
28: Lived with hind-end whip mark (5)