Huq, who said she was in a select committee meeting at the time of the incident, has been MP for Ealing Central and Acton since 2015.
Four Muslim Labour MPs have been sent suspicious packages over the last 48 hours, at least three of which included copies of a "Punish a Muslim" letter that advocated violent acts against Muslims.
Two people have been taken to hospital as a precaution after the package was reportedly sent to Labour's Mohammed Yasin, the MP for Bedford.
All four suspicious letters sent to MPs have been found in the Norman Shaw north building in Westminster, which houses MPs' offices and is linked by a walkway to Portcullis House.
"The affected areas were temporarily cordoned off but no evacuation was necessary". There is a definite pattern.
"The letter calling for attacks on Muslim is just the latest example of rising Islamaphobia and deplorable hate crimes in this country", said Pakistani-origin Labour MP Yasmin Qureshi, who raised an urgent question in the House of Commons yesterday calling on the United Kingdom government to do more to tackle such "incitement to violence and help prevent the growth of such extreme views".
"[It is] totally unacceptable for Muslim MPs to face this", she said.
"The letter calls for a day of violence against Muslims".
Police said they were called at 12:58hrs to reports of a suspicious package at Norman Shaw Buildings, Victoria Embankment, Westminster. According to The Telegraph newspaper, a liquid leaked from the package.
"I have been contacted by a number of people who are anxious about the racist literature that was sent to my office today", Yasin wrote on Facebook. Two people were hospitalised as a precaution before the items were deemed not to be hazardous.
The Muslim Council of Britain said the letters had "caused deep distress and alarm".
The spokesman said there were no reported injuries and inquiries were continuing.
In a speech on Monday, London mayor Sadiq Khan gave examples of recent racist abuse he had received on social media, including posts calling him a terrorist and saying he should "blow himself up like they all do".
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Once we found that there was a risk across the entire range of exposures, we could estimate the number of attributable deaths. People can be exposed to lead via fuel, paint and plumbing , as well as around smelting sites or by handling lead batteries.