Sadly, some scammers are in the business of setting up fake charity websites to steal money donated by good-willed people to these disaster funds.
If you receive one such request by email, then think twice before entering any information. There's a chance it could be a phishing attempt, so do not click the link and offer up your bank account details. If you're keen on donating to whatever cause is being proffered, contact the organisation directly to be safe..