Hi Nitin,
I really don’t think you can find a method to avoid this interference issue. It is not a “standard wireless module”, it is just a basic wireless transmitter receiver pair working at a narrow band of 433Mhz. It does not include any performance improving features which are currently used in wireless/mobile communication field.
You can still improve the performance slightly by connecting a good quality antenna specifically for 433Mhz (purchase online) at both transmitter and receiver end and operating it in a range not more than 30 meters.