Terrible Sewage Stench

SOMETHING TERRIBLE has gone wrong in my bathroom. There's been this "intermittent fault" with the plumbing since I moved in. I think the piping from the toilet has cracked, leaving a stench that ranges from farm-fresh manure to fermented raw sewerage.

The landlord's man advised me to treat the errant lavatory with bleach. This I have done nearly every day, and several times on some days, since moving in. At first bleach seemed to work. But now I'm splurging all around the rim and the bowl with the extra-thick extra-strong variety and the result smells like a slurry cart has crashed into an over-chlorinated swimming pool. It's appalling.

The pong is overwhelming. Can ANYONE advise me what on earth I should do..?

*******

WILLIAM ORBIT: BARBER'S ADAGIO FOR STRINGS (FERRY CORSTEN MIX)
This is the best techno version I know...


  BINARY FINARY: 1999"best version released"...   I found out that most of yesterday my Trinity College Choir Barber's Adagio NASA film wasn't there. This is because of a stupid fault on Blogger where Youtube screens will keep dropping out of the bottom of posts. Does anyone know how to fix this one either?  
*****