Christian peer Lord McColl is urging Parliament to ban prostitution adverts from newspapers and online sites across England and Wales.
Despite the selling of sexual services being illegal, anyone is free to advertise it.
The Advertising of Prostitution (Prohibition) Bill received its first reading in the House of Lords last week.
Speaking about the proposed legislation, Lord McColl said: "The fact is it is illegal in this country to organise prostitution yet perfectly legal to advertise it and this makes no sense.
"By simply leaving things as they are we are only encouraging a consumerist approach to sex in society where people are mere commodities.
"It is a grim reality, but true nevertheless that many adverts for sexual services in newspapers and online are a front for exploitation and coercion.
"While some choose to offer sexual services, there is clear evidence to suggest many are being exploited and abused and do not have this choice."
The Bill is being supported by the Christian charity CARE. Director of Parliamentary Affairs Dr Dan Boucher said: "Behind many of the adverts you can read and see in newspapers and online is the terrible reality of exploited and vulnerable people.
"Lord McColl is absolutely right to seek a change in the law and CARE wholeheartedly welcomes his attempts to raise awareness on this issue.
"We believe action on this issue is vital because at present, the law is far too inconsistent."
A date for further debate in the House of Lords has not been announced.