Thought I managed to clean the coffee spill effectively; however, few days later the scent is still there. At this stage, what is a suitable way to removed coffee scent off a rugged floor?
Dump a box of baking soda on it, wait a few days, vacuum it up.
Vinegar can solve the issue as well. Try a 1 to 2 ratio with water.
Most pet stores, these days, sell enzyme mixtures for eliminating pet odors. These will work on many organic odors, IF you haven't already "set" the stain by hitting it with other chemicals. (Even then, they may help. Nothing will ever eliminate all traces of the previous owner's cat from my persian rug, but it's been knocked down to a level that neither I nor my own cats find objectionable. I did have to treat both top and bottom of the rug rather thoughly, though, since the stain had soaked through.)
(By the way, this stuff is great for eliminating sick-room odors as well. Organics are organics.)
Adding on, you can do the enzyme cleaner already mentioned (and the kind for laundry has always worked just as well for me) then the next day put baking soda & vacuum it off
Source: my ADD medication has a side effect of making me really good at cleaning, so friends & relatives are always hitting me up for problems like this.