Well I'm sorry to lower the tone straight away...but if clearing up residue of sick or wee, it is your best friend. Hopefully you won't need it too imminently.
It is a good deodoriser. You can make it fizz in the toilet bowl and add a couple of drops of a nice oil, bung lavender flowers in it etc (like making flavoured sugar). You can sprinkle this over carpets or rugs overnight and hoover them to lift out smells.
Bicarb and lemon is meant to be quite a classic combination but I forget what it is best for now.
Run some through your washing machine or dishwasher on an empty hot wash to clean them. Sprinkle over damp stainless steel sink and draining board and use a cut lemon to scrub it before rinsing. Sprinkle over mattresses, leave for a while then vacuum off to freshen mattress.