We hope you are by now past that stage with your English where you keep clinging ~ like a beginner swimmer or skater ~ to those over-worked easy words like 'nice' and 'get'.
In this Quiz we are hoping to encourage you to express such ideas more interestingly (as we say) 'in other words'.
English recognises the unhelfpul ambiguity of its own word 'funny' by asking the catchphrase question, 'Funny ha-ha, or funny peculiar?' (i.e. does the word, in some particular context, mean 'amusing' or 'unpleasant and potentially suspicious'?)
The second use in this Question seems unlikely to be matter of amusement (what, after all, is 'an amusing smell'?), so the middle two Answers (2 & 3) are unlikely to make suitable sense; Answer 4 starts well, but 'funny' in its other sense does not really stretch far enough to cover 'repugnant' or 'disgusting'. Its shade and depth of meaning are more likely to refer to a smell that was at least not predominantly unpleasant, but tricky to identify (e.g. a mixture of old-fashioned furniture polish or other cleaning materials, stale housefire or cookery smells, and/or an old or unfamiliar industrial process). The smell may have been puzzling, even faintly disturbing, but probably neither so strong nor so strange as to trigger the 'gag reflex' (tantamount to outright nausea, such that you more or less had either to faint or flee!). Meanwhile, the front adjectives in the two middle Answers each start with a vowel, so they wouldn't fit comfortably after 'a ... ' on technical grounds anyway.