Hi Lalitha,
I love it when my home smells good...and I'll go to great lengths to remove all the cooking odors every time I use Onions/garlic..
I try not to use heavy sprays or agarbattis anymore because they are harmful, so I use many candles, or potpourri burners with Sandalwood, rose or gardenia oils.
sometimes, I also boil some water with cloves, cinnamon, vanilla extract and orange peels..then I let it simmer, this spreads a wonderful aroma through the kitchen..do try it sometime!
here's a
link for the picture of the potpourri oil burners, I am not sure if you get this in India yet.
hope this helps!