Before using the iron for the first time, clean the water tank and the steam holes. It is normal to smell a mild odour or see some white residue coming from the soleplate holes during this process. 

Clean the water tank and the steam holes

Fill the tank with tap water up to the MAX level and turn the iron on. Run the steam function until you’ve used up all the water. Use the shock steam button frequently so the water evaporates faster. This will get rid of any residue left from the manufacturing process. Do this twice and your appliance will be ready to use.